Vehicle-wheel



(-N o Model.)

J. R. LOGKB. VBHIGLE WHEEL.

FEM?

w if 776.93 e8.'

UNITED STATES PATENT CEETCE.

JOSEPH R. LOCKE, OF AMESBURY, MASSACHUSETTS.

VEHICLE-WHEEL.

SPECIFICATION forming part of Letters Patent No. 247,257, dated September 20, 188]..

Application filed July 15, 1881. (No model.)

or producing the spoke-holesin the felly or rim with a diameter greater in the transverse than in the longitudinal direction ofthe rim or felly with the spoke-tenons circularin cross-section, whereby the Contact pressure between the spoke-tenon and the walls of the spoke-hole is prevented from checking and splitting the felly adjacent to such hole, as will, by the aid of the annexed drawings, be hereinafter fully described, and specifically defined in the appended claim.

'Figure l is an enlarged view showing a spoke-tenon in transverse section and a section of a felly in plan, and showing therein in an exaggerated degree my improvement. Fig. 2 shows, in side elevation, a machine for carrying my invention into practice. Fig. 3 is a' detached front elevation of some of the parts shown in Fig. Fig. 4 is a side elevation, showin g a modification of the machine for carrying my invention into practice. Fig. 5 is a horizontal section taken through the front bearing of arbor m, as shown in Fig. 4, and also through its supporting-strap, and showing said arbor in plan.

In the manufacture as well as use of wheels for vehicles, and especially light wheels with bent rims, one of the most serious difficulties encountered has hitherto been the tendency of the rims to split adjacent to the spoke-holes therein; and many devices have been employed to prevent this difficultysuch as metallic couplings, rivets, and headless screws. applied to the it'ellies; but after numerous attempts and protracted trials the use of all kinds ot' metallic fastenings at the junction ofthe spoke and felly have been almost universally abandoned; and to eiiect the desired result I have invented my said improvement in the construction of the wheel itself.

For the purpose of showing some means of practicing my said invention., I have embodied iu said drawings the machine there represented, in whichd represents the bed or top, which is supported by legs c. A boring-arbor, fm, is journaled in bearings n n', secured to said frame. A boring-bit, l, is secured in said arbor, and isthereby rotated either through the use of crank o or by a belt acting upon pulley p. A curvedfaced pressure-block, c, is secured upon bed d, and a similar block, f, is pivoted to the lower end of the lower arm, g, of a toggle-joint,while the upper end of the upper arm thereof is pivoted to the overhead support h, said togglejoint being actuated by treadlej, which is actuated by pressure upon foot pad 7c, which treadle is pivoted in bed d, as shown, while its upper end is pivoted to rod t', which is connected with the meeting ends of said arms g, and by depressing said treadle by means ot' pad 7c, pressure is exerted upon f'elly a when placed between blocks ef, as is clearly shown in Fig. 3. When thus compressed the spokeholes c are successively bored by bit l, as before stated, the hole beingin such case formed circular, as shown at the left hand in Fig. 3; but when relieved from such pressure the expansion of the Wood will enlarge such hole in a direction transverse to the axle line of the felly, as shown by the right-hand hole c in said Fig. 3.

In Fig. 4 the arbor m is shown as journaled at the rear end in the bearing s, pivoted in support t, and at the front end in bearingr,which is guided in support x, and receives a slight vertical reciprocating motion through connecting-rod y, which at its upper extremity is secured to said box c, and at its lower extremity is by straps z attached to eccentric a', which is securedv to and rotated by shaft b', so that when arbor m and shaft b are simultaneously rotated bit l will, by its consequent rotary and vertically-vibrating motion, cut a hole in felly c with a greater vertical than horizontal diameter, and this whether the felly. is compressed between blocks e for not; but if thus bored when so compressed, then, of course, the elongation or oval form ofthe hole c will be so much the greater.

In Fig. 1 the enlargement of hole c transversely to felly a is shown as exaggerated, in order to exemplify the pressure between the felly and tenon b in the longitudinal direction of the felly, and the decreased transverse sis pressure of said teuon upon the fe1ly,by which any desired degree of pressure between the two may be secured Without danger of splitting, and yet prevent compression of the felly so as to bulge the seme et the sides opposite the spokes.

The arbor m may be actuated lineully by means of angle-lever c,whieh is pivoted et df, endet its upper end is attached to said arbor.

I claim as my invention- As an improvement in carriage-Wheels, the

4combination of the spokes formed'with the tenons b, circular in cross-section, and the rim a, haviugthe spoke-holes c formed therein,with :L diameter greater in the transverse than the longitudinal line of the rim, substantially as specified.

JOSEPH R. LOGKE.

Witnesses:

JOSEPH T. GLARKsoN, GEORGE H..BRIGGS. 

